David K. Joyce

Rare Minerals

Unusual and rare minerals that I felt would be better here than in some other category! :)

All prices in Canadian dollars. For payment in US$, deduct 18% or multiply by 0.82.

Click on any of the following thumbnails to view a larger image of the specimen.

Item #28302 Fluor-Uvite 1.6x1.8x1.2 cm Largest Crystal Size: 16mm $45.00 Dale Bush Farm Richville, St. Lawrence County New York, USA A sharp, mostly complete, singly terminated fluor-dravite crystal with a little gossanous material attached. Has a couple of crystal parts missing and one contact point. Nicely fluorescent yellow under SW U/V light.	Item #29145 Carpholite 2.9x3.0x1.5 cm Largest Crystal Size: 6mm spray $35.00 Krasno, Socolov Dist. Karlovy Vary Reg. Czech Republic This specimen displays a vein of light yellow radiating tufts of carpholite crystals sandwiched between granitic quarts slabs. A nice example from the collection of Kay Robertson and accompanied by her old label.	Item #28264 Spencerite 2.7x2.2x1.7 cm Largest Crystal Size: 18mm $65.00 HB Mine Salmo British Columbia, Canada A solid fragment of crystallized spencerite composed of compressed, lath-like crystals of this extremely rare zinc phosphate. From the type locality.	Item #29261 Jarosite 5.0x3.1x4.0 cm Largest Crystal Size: 1mm $45.00 Colorado #2 Mine Tintic Dist., Juab Co. Utah, USA Well, it is not a REALLY rare mineral but specimens like this are actually not that common. Nice crystallized jarosite specimen!
Item #21937 Carparthite 7.0x6.0x5.1 cm Largest Crystal Size: 6mm $65.00 Picacho Mine San Benito Co. California, USA This specimen has some openings that contain yellowish crystals of this unusual mineral that is composed of just carbon and hydrogen! Some nice crystals here!	Item #21955 Felsobanyaite, Gypsum 3.7x2.8x2.8 cm Largest Crystal Size: n/a $40.00 Chickerell Dorset England OK, it is not pretty! It IS unusual, though! White aggregates of this unusual aluminum sulfate mineral intermixed with elongated growths of gypsum. Was labelled originally as "basaluminite", which is a pseudonym for felsobanyaite. Unusual!	Item #21961 Ussingite 4.7x4.3x3.2 cm Largest Crystal Size: n/a $45.00 Mt. Punkurauj Chibiny Massif, Kola Peninsula Russia A fragment of massive ussingite ranging from light mauve to purple. Rich!	Item #21992 Brewsterite, Baryte 3.5x3.4x2.2 cm Largest Crystal Size: 2mm $35.00 Strontian Argyllshire Scotland This thick plate has its top covered with white crested baryte crystals which have a generous sprinkling of sharp brewsterite crystals. There is sphalerite or wurtzite embedded in the matrix. From the type locality!
Item #22797 Dawsonite, Calcite 16.0x6.0x3.6 cm Largest Crystal Size: 7mm $55.00 St. Bruno Quebec, Canada Masses of dawsonite fibers are present in fracture in this apparent limestone matrix. openings in the rock are lined with calcite rhombs. Unusual! R	Item #25064 Rosenbuschite, Eudialyte, Aegirine 7.0x4.0x4.8 cm Largest Crystal Size: n/a $75.00 Norra Karr, Sweden Some 1-2mm orangey-brown crystals of rosenbuschite are embedded in this nepheline-eudialite-aegirine rock. Rare!	Item #25968 Bayldonite, Mimetite 2.7x2.2x1.6 cm Largest Crystal Size: micro $45.00 Gold Hill Mine Toole County Utah, USA Lots of light green bayldonite crystals associated with white mimetite crystals on this gossanous matrix. Very good!	Item #25993 Boltwoodite, Calcite 2.9x2.4x2.3 cm Largest Crystal Size: 3mm $75.00 Swapkomund Namibia A couple of sprays of deep-yellow boltwoodite span this calcite crystal lined vug in massive calcite. Very nice example!
Item #26394 Klebelsbergite, Sulphur, Stibnite 6.9x4.7x2.6 cm Largest Crystal Size: micro $65.00 Pereta Mine Grosetto, Tuscany Italy This specimen is predominately stibnitre crystal sections with openings between the stibnite crystals and, also, the matrix. In these openings are lots of yellow, gemmy crystals of native sulphure. As well, often there are whitish sprays of acicular klebelsbergite crystals. Excellent!	Item #27664 Hannebachite 3.4x2.9x1.8 cm Largest Crystal Size: micro $65.00 Hannebacher Ley Eifel Germany This dark matrix has a couple of vugs that contain very thin, platy tiny crystals of hannebachite. Rare stuff!	Item #27801 Macfallite, pyrolusite 9.2x8.2x4.2 cm Largest Crystal Size: 2mm $75.00 Manganese Mine Copper Harbor Michigan, USA This specimen is a mass of pyrolusite and calcite with lots of areas of red-brown macfallite in the pyrolusite and calcite. Some of the calcite could be etched away to reveal really nice macfallite crystals. There are already some open vugs of the minerals with excellent crystals. Rich!	Item #27802 Macfallite, Pyrolusite 9.7x9.0x5.0 cm Largest Crystal Size: 2mm $75.00 Manganese Mine Copper Harbor Michigan, USA Lots of macfallite in this specimen of calcite, macfallite and pyrolusite. If you etch some of the calcite off with vinegar or weak acid, there will be loads of nice macfallite crystals to view.
Item #27805 Neotocite, Pyrolusite 7.6x7.1x5.7 cm Largest Crystal Size: n/a $75.00 Taylor Mine Alberta Michigan, USA This specimen shows a quartz bed or vein that passes through iron-manganese oxides. The oxides are laced through with seams of thick, dark brown neotocite. Interestingly, at one end of the specimen there are pyrolusite crystals embedded in the neotocite.	Item #27806 Neotocite 9.0x6.0x4.7 cm Largest Crystal Size: n/a $65.00 Taylor Mine Alberta Michigan, USA This is a fragment of bedded manganese-iron oxide and quartz mineralization. Particularly at one end, there is lots of dark brown, glassy-resinous neotocite.	Item #27808 Neotocite, Pyrolusite 7.8x5.0x5.3 cm Largest Crystal Size: n/a $55.00 Taylor Mine Alberta Michigan, USA This specimen shows a band of dark quartz passing through iron-manganese oxides. The oxides on either side of the quartz have been partially altered to neotocite. Interestingly, the neotocite on one side has pyrolusite crystals cutting through it. Interesting!	Item #27818 Galena, Seligmannite, Tetrahedrite, Quartz 8.0x5.0x5.8 cm Largest Crystal Size: g-27mm, sel0.5mm $75.00 La Palomo Mine Huachocolpa, Huancavelica Peru A large cluster of cube-octahedral galena crystals encrusted with tiny quartz and sharp, prismatic seligmannite crystals. The seligmannite crystals sparkle and are easily seen but best looked at with a loupe or microscope. Rare mineral!! Also some small, sharp, tetrahedrite crystals.
Item #27895 Clinoatacamite, Gypsum, Quartz 7.1x6.3x3.9 cm Largest Crystal Size: 2mm $85.00 Lily Mine Pisco Umay Peru Here is an exemplary specimen of this relatively rare mineral. The cavity in the top of this specimen is a quartz crystal-lined cavity that is sprinkled liberally, and clustered heavily at one end, with dark, emerald-green clinoatacamite crystals. These crystals are very sharp and excellent for the mineral. As well, there are some gypsum crystals in the cavity. Displays well.	Item #29160 Gibbsite 8.0x6.2x5.1 cm Largest Crystal Size: n/a $55.00 Wenshan Yunnan China This is a specimen of baby blue-toned botryoidal gibbsite, a fairly uncommon aluminum hydroxide mineral that has been coming out of China over the last several years. Surprisingly lightweight! Gibbsite is normally thought of as a non-descript mineral in bauxite and is the actual ore mineral of aluminum in bauxite!	Item #28882 Hibonite 1.9x1.9x0.8 cm Largest Crystal Size: as above $85.00 Fort Dauphin Madagascar Here is a crystal of this rare pegmatite mineral from the type locality! It is a rough crystal but all the faces are there to make it a good representative crystal of this mineral.	Item #28913 Triphylite 1.4x1.1x1.0 cm Largest Crystal Size: as above $75.00 Smith Mine Newport New Hampshire, USA Here is a well formed crystal of this unusual pegmatitic, phosphate mineral. From a great pegmatite area!
Item #28947 Normandite 2.1x1.8x2.0 cm Largest Crystal Size: n/a $75.00 Khibina Mountains Kola Peninsula Russia A superb example of this rare niobium/zirconium silicate mineral. The piece shows a large spray at the front of the matrix and there is a second spray at the back of the specimen. Excellent piece from this amazing alkaline intrusive area!	Item #28978 Sarabauite 2.0x1.5x2.3 cm Largest Crystal Size: n/a $45.00 Sarabau Mine Sarawak , Malasia This matrix has rich inclusions of orange-red cleavages of sarabauite. This mineral is a very peculiar mineral which is sort of a hybrid sulphide and oxide, perhaps oxy-sulphide? From the type locality.